Lower Breast Cancer Mortality Seen With Estrogen Use

SAN FRANCISCO--Use of estrogen supplements may lower breast cancer mortality, an American Cancer Society study has shown. The study, which was discussed at the ACS's science writers meeting, followed 400,000 women who provided data about their cancer risk factors. After 9 years, breast cancer mortality was 16% lower in those women who used estrogen, suggesting that their tumors were less aggressive.